<template>
  <div>
      <qwerty title1="首页" title2="商品管理" title3="添加商品"></qwerty>

      <el-card style="margin-top:20px">
          <el-alert title="添加商品信息" type="info" center show-icon :closable="false">
          </el-alert>
          <el-steps :space="200" :active="activeIndex-0" finish-status="success" style="margin-top:20px"  align-center>
                <el-step title="基本步骤"></el-step>
                <el-step title="商品参数"></el-step>
                <el-step title="商品属性"></el-step>
                <el-step title="商品图片"></el-step>
                <el-step title="商品内容"></el-step>
                <el-step title="完成"></el-step>
          </el-steps>
          <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
          <el-tabs v-model="activeIndex" tab-position="left" @tab-click="tabClicked" >
                <el-tab-pane label="基本信息" name="0">
                    <el-form-item label="商品名称" prop="goods_name">
                        <el-input v-model="addForm.goods_name" type="number"></el-input>
                    </el-form-item>
                    <el-form-item label="商品价格" prop="goods_price">
                        <el-input v-model="addForm.goods_price" type="number"></el-input>
                    </el-form-item>
                    <el-form-item label="商品重量" prop="goods_weight">
                        <el-input v-model="addForm.goods_weight" type="number"></el-input>
                    </el-form-item>
                    <el-form-item label="商品数量" prop="goods_number">
                        <el-input v-model="addForm.goods_number" type="number"></el-input>
                    </el-form-item>
                    <el-form-item label="商品分类" prop="goods_cat">
                        <!-- @change="handleChange" -->
                        <el-cascader 
                        expand-trigger="hover" 
                        :options="catelist" 
                        :props="cateProps" 
                        v-model="addForm.goods_cat">
                        </el-cascader>
                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品参数" name="1">
                    <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
                        <el-checkbox-group v-model="item.attr_vals">
                            <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border>

                            </el-checkbox>
                        </el-checkbox-group>
                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品属性" name="2">
                    <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
                        <el-input v-model="item.attr_vals"></el-input>
                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品图片" name="3">
                    <el-upload :action="uploadURL" :on-preview="handlePreview" :on-remove="handleRemove" list-type="picture" :headers="headerObj" :on-success="handlSuccess">
                        <el-button size="small" type="primary">点击上传</el-button>
                    </el-upload>
                </el-tab-pane>
                <el-tab-pane label="商品内容" name="4">
                    <quill-editor style="height:200px" v-model="addForm.goods_introduce"></quill-editor>
                    <el-button type="primary" class="btnAdd" @click="add('addForm')">添加商品</el-button>
                </el-tab-pane>
          </el-tabs>
          </el-form>
      </el-card>
      <el-dialog title="图片预览" :visible.sync="previewVisible">
          <img :src="previewPath" alt="" class="previewImg"  width="70%"/>
      </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
    data(){
        return{
            manyTableData:[],
            onlyTableData:[],
            catelist:[],
            cateProps:{
                label:'cat_name',
                value:'cat_id',
                children:'children'
            },
            activeIndex:0,
            addForm:{
                goods_name:'',
                goods_price:0,
                goods_weight:0,
                goods_number:0,
                goods_cat:[],
                pics:[],
                goods_introduce:'',
                attrs:[]
            },
            uploadURL:'http://122.112.253.28:8888/api/private/v1/upload',
            headerObj:{
                Authorization:window.sessionStorage.getItem('token')
            },
            previewPath:'',
            previewVisible:false,
            addFormRules:{
                goods_name:[
                    {
                        required:true,
                        message:'请输入商品名称',
                        trigger:'blur'
                    }
                ],  goods_price:[
                    {
                        required:true,
                        message:'请输入商品价格',
                        trigger:'blur'
                    }
                ],  goods_weight:[
                    {
                        required:true,
                        message:'请输入商品重量',
                        trigger:'blur'
                    }
                ],  goods_number:[
                    {
                        required:true,
                        message:'请输入商品数量',
                        trigger:'blur'
                    }
                ],  goods_cat:[
                    {
                        required:true,
                        message:'请输入商品分类',
                        trigger:'blur'
                    }
                ]
            }
        }
    },
    computed:{
        cateId(){
            if(this.addForm.goods_cat.length === 3){
                return this.addForm.goods_cat[2]
            }
            return null
        }
    },
    methods:{
        beforeTableave(activeName,oldActiveName){
            if(oldActiveName==='0' && this.ruleForm.goods_cat.length!==3){
            this.$refs.addForm.validate(async valid=>{
                if(!valid) return this.$message.error('请填写必要的表单项！');
            })
            this.$message.error('请先选择商品分类！')
            return false;
            }
        },
        async add(addForm){
            this.$refs[addForm].validate(async valid=>{
            if(!valid) return this.$message.error('请填写必要的表单项！');
            
            this.ruleForm.goods_cat=this.ruleForm.goods_cat.join(',');
            alert(this.ruleForm.goods_cat)
            
            this.manyTableData.forEach(item=>{
                const newInfo={
                attr_id:item.attr_id,
                attr_value:item.attr_vals.join(' ')
                }
                this.ruleForm.attrs.push(newInfo)
            })

            this.onlyTableData.forEach(item=>{
                const newInfo={
                attr_id:item.attr_id,
                attr_value:item.attr_vals
                }
                this.ruleForm.attrs.push(newInfo)
            })

            var {data:res} =await addGoods(this.ruleForm);
            if(res.meta.status==201){
                this.$message.success(res.meta.msg)
                this.$router.push('/goods');
            }else{
                this.$message.error(res.meta.msg)
                this.$router.push('/goods');
                }
            })
        },
        //同步删除数组里图片路径
        handleRemove(file){
            const filePath=file.response.data.tmp_path
            const i=this.addForm.pics.findIndex(x=>x.pic===filePath)
            this.addForm.pics.splice(i,1)
            console.log(this.addForm);
        },
        //监听图片上传成功事件
        handlSuccess(response){
            console.log(response);
            const picInfo={pic:response.data.tmp_path}
            this.addForm.pics.push(picInfo)
            console.log(this.addForm);
        },
        //处理图片预览效果
        handlePreview(file){
            console.log(file);
            this.previewPath=file.response.data.url
            this.previewVisible=true
        },

        async tabClicked(){
            if(this.activeIndex === '1'){
                const {data:res} = await this.request.get(
                    `categories/${this.cateId}/attributes`,
                    {
                        params:{sel:'many'}
                    }
                )
                if(res.meta.status !==200){
                return this.$message.error('获取动态参数列表失败!')
                }
                console.log(res.data);
                res.data.forEach(item =>{
                    // item.attr_vals.length === 0 ? [] :
                    item.attr_vals = item.attr_vals.split(' ')
                })
                this.manyTableData = res.data
            }else if(this.manyTableData === '2'){
                const {data:res} = await this.request.get(
                    `categories/${this.cateId}/attributes`,
                    {
                        params:{sel:'only'}
                    }
                )
                if(res.meta.status !==200){
                return this.$message.error('获取动态参数列表失败!')
                }
                console.log(res.data);
                this.onlyTableData = res.data
            }
        },
        async getCateList(){
            const {data:res} = await this.request.get('categories')
            if(res.meta.status !==200){
                return this.$message.error('获取商品分类数据失败!')
            }
            this.catelist = res.data
            console.log(this.catelist);
        }
    },
    created(){
        this.getCateList();
    }
}
</script>

<style>

</style>